<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=501257
-->
<head>
  <title>Test for the classList element attribute</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="http://www.whatwg.org/specs/web-apps/current-work/#dom-classlist">classList DOM attribute</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">

/** Test for Bug 501257 **/

const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
const SVG_NS = "http://www.w3.org/2000/svg";
const XHTML_NS = "http://www.w3.org/1999/xhtml"
const MATHML_NS = "http://www.w3.org/1998/Math/MathML";

var gMutationEvents = [];

function onAttrModified(event) {
  is(event.attrName, "class", "mutation on unexpected attribute");

  gMutationEvents.push({
    attrChange: event.attrChange,
    prevValue: event.prevValue,
    newValue: event.newValue,
  });
}

function checkModification(e, funcName, args, expectedRes, before, after, expectedException) {
  if (!Array.isArray(args)) {
    args = [args];
  }

  var shouldThrow = typeof(expectedException) === "string";
  if (shouldThrow) {
    // If an exception is thrown, the class attribute shouldn't change.
    after = before;
  }
  if (before === null)
    e.removeAttribute("class");
  else
    e.setAttribute("class", before);

  var contextMsg = "(checkModification: funcName=" + funcName + ",args=" +
                   JSON.stringify(args) + ",expectedRes=" + expectedRes +
                   ",before=" + before + ",after=" + after + ")";

  gMutationEvents = [];
  e.addEventListener("DOMAttrModified", onAttrModified, false);
  try {
    var list = e.classList;
    var res = list[funcName].apply(list, args);
    if (shouldThrow)
      ok(false, "classList modification didn't throw " + contextMsg);
  } catch (e) {
    if (!shouldThrow)
      ok(false, "classList modification threw an exception " + contextMsg);
    is(e.name, expectedException, "wrong exception thrown " + contextMsg);
  }
  e.removeEventListener("DOMAttrModified", onAttrModified, false);
  if (expectedRes !== null)
    is(res, expectedRes, "wrong return value from " + funcName +
       " " + contextMsg);

  var expectedAfter = after;
  // XUL returns an empty string when getting a nonexistent class attribute.
  if (e.namespaceURI == XUL_NS && expectedAfter === null)
    expectedAfter = "";

  is(e.getAttribute("class"), expectedAfter, "wrong class after modification " +
     contextMsg);
  var expectedMutation = before != after;
  is(gMutationEvents.length, expectedMutation ? 1 : 0,
     "unexpected mutation event count " + contextMsg);
  if (expectedMutation && gMutationEvents.length) {
    is(gMutationEvents[0].attrChange,
       before == null ? MutationEvent.ADDITION : MutationEvent.MODIFICATION,
       "wrong type of attribute change " + contextMsg);
    // If there wasn't any previous attribute, prevValue will return an empty
    // string.
    var expectedPrevValue = before === null ? "" : before;
    is(gMutationEvents[0].prevValue, expectedPrevValue,
       "wrong previous value " + contextMsg);
    is(gMutationEvents[0].newValue, after, "wrong new value " + contextMsg);
  }
}

function assignToClassListStrict(e) {
  "use strict";
  try {
    e.classList = "foo";
    ok(true, "assigning to classList didn't throw");
    e.removeAttribute("class");
  } catch (e) {
    ok(false, "assigning to classList threw");
  }
}

function assignToClassList(e) {
  try {
    var expect = e.classList;
    e.classList = "foo";
    ok(true, "assigning to classList didn't throw");
    is(e.classList, expect, "classList should be unchanged after assignment");
    e.removeAttribute("class");
  } catch (e) {
    ok(false, "assigning to classList threw");
  }
}

function testClassList(e) {

  // basic tests

  isnot(e.classList, undefined, "no classList attribute");
  is(typeof(e.classList.contains), "function",
     "no classList.contains function");
  is(typeof(e.classList.add), "function", "no classList.add function");
  is(typeof(e.classList.remove), "function", "no classList.remove function");
  is(typeof(e.classList.toggle), "function", "no classList.toggle function");

  assignToClassListStrict(e);
  assignToClassList(e);

  // length attribute

  is(e.classList.length, 0, "wrong classList.length value");
  e.setAttribute("class", "");
  is(e.classList.length, 0, "wrong classList.length value");
  e.setAttribute("class", "   \t  \f");
  is(e.classList.length, 0, "wrong classList.length value");

  e.setAttribute("class", "a");
  is(e.classList.length, 1, "wrong classList.length value");
  e.setAttribute("class", "a A");
  is(e.classList.length, 2, "wrong classList.length value");
  e.setAttribute("class", "\r\na\t\f");
  is(e.classList.length, 1, "wrong classList.length value");

  e.setAttribute("class", "a a");
  is(e.classList.length, 2, "wrong classList.length value");

  e.setAttribute("class", "a a a a a a");
  is(e.classList.length, 6, "wrong classList.length value");

  e.setAttribute("class", "a a b b");
  is(e.classList.length, 4, "wrong classList.length value");

  e.setAttribute("class", "a A B b");
  is(e.classList.length, 4, "wrong classList.length value");

  e.setAttribute("class", "a b c c b a a b c c");
  is(e.classList.length, 10, "wrong classList.length value");

  // [Stringifies]

  ok(DOMTokenList.prototype.hasOwnProperty("toString"),
     "Should have own toString on DOMTokenList")

  e.removeAttribute("class");
  is(e.classList.toString(), "", "wrong classList.toString() value");
  is(e.classList + "", "", "wrong classList string conversion value");

  e.setAttribute("class", "foo");
  is(e.classList.toString(), "foo", "wrong classList.toString() value");
  is(e.classList + "", "foo", "wrong classList string conversion value");

  // item() method

  e.setAttribute("class", "a");
  is(e.classList.item(-1), null, "wrong classList.item() result");
  is(e.classList[-1], undefined, "wrong classList[] result");
  is(e.classList.item(0), "a", "wrong classList.item() result");
  is(e.classList[0], "a", "wrong classList[] result");
  is(e.classList.item(1), null, "wrong classList.item() result");
  is(e.classList[1], undefined, "wrong classList[] result");

  e.setAttribute("class", "aa AA aa");
  is(e.classList.item(-1), null, "wrong classList.item() result");
  is(e.classList[-1], undefined, "wrong classList[] result");
  is(e.classList.item(0), "aa", "wrong classList.item() result");
  is(e.classList[0], "aa", "wrong classList[] result");
  is(e.classList.item(1), "AA", "wrong classList.item() result");
  is(e.classList[1], "AA", "wrong classList[] result");
  is(e.classList.item(2), "aa", "wrong classList.item() result");
  is(e.classList[2], "aa", "wrong classList[] result");
  is(e.classList.item(3), null, "wrong classList.item() result");
  is(e.classList[3], undefined, "wrong classList[] result");
  is(e.classList.item(0xffffffff), null, "wrong classList.item() result");
  is(e.classList[0xffffffff], undefined, "wrong classList[] result");
  is(e.classList.item(0xfffffffe), null, "wrong classList.item() result");
  is(e.classList[0xffffffe], undefined, "wrong classList[] result");

  e.setAttribute("class", "a b");
  is(e.classList.item(-1), null, "wrong classList.item() result");
  is(e.classList[-1], undefined, "wrong classList[] result");
  is(e.classList.item(0), "a", "wrong classList.item() result");
  is(e.classList[0], "a", "wrong classList[] result");
  is(e.classList.item(1), "b", "wrong classList.item() result");
  is(e.classList[1], "b", "wrong classList[] result");
  is(e.classList.item(2), null, "wrong classList.item() result");
  is(e.classList[2], undefined, "wrong classList[] result");

  // contains() method

  e.removeAttribute("class");
  is(e.classList.contains("a"), false, "wrong classList.contains() result");
  try {
    e.classList.contains("");
    ok(true, "classList.contains(empty_string) didn't throw");
  } catch (e) {
    ok(false, "classList.contains(empty_string) threw");
  }
  try {
    e.classList.contains("  ");
    ok(true, "classList.contains(string_with_spaces) didn't throw");
  } catch (e) {
    ok(false, "classList.contains(string_with_spaces) threw");
  }
  try {
    e.classList.contains("aa ");
    ok(true, "classList.contains(string_with_spaces) didn't throw");
  } catch (e) {
    ok(false, "classList.contains(string_with_spaces) threw");
  }

  e.setAttribute("class", "");
  is(e.classList.contains("a"), false, "wrong classList.contains() result");

  e.setAttribute("class", "a");
  is(e.classList.contains("a"), true, "wrong classList.contains() result");
  is(e.classList.contains("aa"), false, "wrong classList.contains() result");
  is(e.classList.contains("b"), false, "wrong classList.contains() result");

  e.setAttribute("class", "aa AA");
  is(e.classList.contains("aa"), true, "wrong classList.contains() result");
  is(e.classList.contains("AA"), true, "wrong classList.contains() result");
  is(e.classList.contains("aA"), false, "wrong classList.contains() result");

  e.setAttribute("class", "a a a");
  is(e.classList.contains("a"), true, "wrong classList.contains() result");
  is(e.classList.contains("aa"), false, "wrong classList.contains() result");
  is(e.classList.contains("b"), false, "wrong classList.contains() result");

  e.setAttribute("class", "a b c");
  is(e.classList.contains("a"), true, "wrong classList.contains() result");
  is(e.classList.contains("b"), true, "wrong classList.contains() result");

  // Test for bug 530171
  e.setAttribute("class", "null undefined");
  is(e.classList.contains(null), true, "wrong classList.contains() result");
  is(e.classList.contains(undefined), true, "wrong classList.contains() result");

  // add() method

  function checkAdd(before, argument, after, expectedException) {
    checkModification(e, "add", argument, null, before, after, expectedException);
  }

  checkAdd(null, "", null, "SyntaxError");
  checkAdd(null, ["a", ""], null, "SyntaxError");
  checkAdd(null, " ", null, "InvalidCharacterError");
  checkAdd(null, ["a", " "], null, "InvalidCharacterError");
  checkAdd(null, ["a", "aa "], null, "InvalidCharacterError");

  checkAdd("a", "a", "a");
  checkAdd("aa", "AA", "aa AA");
  checkAdd("a b c", "a", "a b c");
  checkAdd("a a a  b", "a", "a a a  b");
  checkAdd(null, "a", "a");
  checkAdd("", "a", "a");
  checkAdd(" ", "a", " a");
  checkAdd("   \f", "a", "   \fa");
  checkAdd("a", "b", "a b");
  checkAdd("a b c", "d", "a b c d");
  checkAdd("a b c ", "d", "a b c d");

  // multiple add
  checkAdd("a b c ", ["d", "e"], "a b c d e");
  checkAdd("a b c ", ["a", "a"], "a b c ");
  checkAdd("a b c ", ["d", "d"], "a b c d");
  checkAdd("a b c ", [], "a b c ");
  checkAdd(null, ["a", "b"], "a b");
  checkAdd("", ["a", "b"], "a b");

  // Test for bug 530171
  checkAdd(null, null, "null");
  checkAdd(null, undefined, "undefined");

  // remove() method

  function checkRemove(before, argument, after, expectedException) {
    checkModification(e, "remove", argument, null, before, after, expectedException);
  }

  checkRemove(null, "", null, "SyntaxError");
  checkRemove(null, " ", null, "InvalidCharacterError");
  checkRemove(null, "aa ", null, "InvalidCharacterError");

  checkRemove(null, "a", null);
  checkRemove("", "a", "");
  checkRemove("a b  c", "d", "a b c");
  checkRemove("a b  c", "A", "a b c");
  checkRemove(" a a a ", "a", "");
  checkRemove("a  b", "a", "b");
  checkRemove("a  b  ", "a", "b");
  checkRemove("a a b", "a", "b");
  checkRemove("aa aa bb", "aa", "bb");
  checkRemove("a a b a a c a a", "a", "b c");

  checkRemove("a  b  c", "b", "a c");
  checkRemove("aaa  bbb  ccc", "bbb", "aaa ccc");
  checkRemove(" a  b  c ", "b", "a c");
  checkRemove("a b b b c", "b", "a c");

  checkRemove("a  b  c", "c", "a b");
  checkRemove(" a  b  c ", "c", "a b");
  checkRemove("a b c c c", "c", "a b");

  checkRemove("a b a c a d a", "a", "b c d");
  checkRemove("AA BB aa CC AA dd aa", "AA", "BB aa CC dd aa");

  checkRemove("\ra\na\ta\f", "a", "");

  // multiple remove
  checkRemove("a b c ", ["d", "e"], "a b c");
  checkRemove("a b c ", ["a", "b"], "c");
  checkRemove("a b c ", ["a", "c"], "b");
  checkRemove("a b c ", ["a", "a"], "b c");
  checkRemove("a b c ", ["d", "d"], "a b c");
  checkRemove("a b c ", [], "a b c");
  checkRemove(null, ["a", "b"], null);
  checkRemove("", ["a", "b"], "");

  // Test for bug 530171
  checkRemove("null", null, "");
  checkRemove("undefined", undefined, "");

  // toggle() method

  function checkToggle(before, argument, expectedRes, after, expectedException) {
    checkModification(e, "toggle", argument, expectedRes, before, after, expectedException);
  }

  checkToggle(null, "", null, null, "SyntaxError");
  checkToggle(null, "aa ", null, null, "InvalidCharacterError");

  checkToggle(null, "a", true, "a");
  checkToggle("", "a", true, "a");
  checkToggle(" ", "a", true, " a");
  checkToggle("   \f", "a", true, "   \fa");
  checkToggle("a", "b", true, "a b");
  checkToggle("a", "A", true, "a A");
  checkToggle("a b c", "d", true, "a b c d");
  checkToggle("a b c", "d", true, "a b c d");

  checkToggle("a", "a", false, "");
  checkToggle(" a a a ", "a", false, "");
  checkToggle(" A A A ", "a", true, " A A A a");
  checkToggle(" a b c ", "b", false, "a c");
  checkToggle(" a b c b b", "b", false, "a c");
  checkToggle(" a b  c  ", "c", false, "a b");
  checkToggle(" a b c ", "a", false, "b c");

  // Test for bug 530171
  checkToggle("null", null, false, "");
  checkToggle("", null, true, "null");
  checkToggle("undefined", undefined, false, "");
  checkToggle("", undefined, true, "undefined");


  // tests for the force argument handling

  function checkForceToggle(before, argument, force, expectedRes, after, expectedException) {
    checkModification(e, "toggle", [argument, force], expectedRes, before, after, expectedException);
  }

  checkForceToggle("", "a", true, true, "a");
  checkForceToggle("a", "a", true, true, "a");
  checkForceToggle("a", "b", true, true, "a b");
  checkForceToggle("a b", "b", true, true, "a b");
  checkForceToggle("", "a", false, false, "");
  checkForceToggle("a", "a", false, false, "");
  checkForceToggle("a", "b", false, false, "a");
  checkForceToggle("a b", "b", false, false, "a");
}

var content = document.getElementById("content");

var htmlNode = document.createElement("div");
content.appendChild(htmlNode);
testClassList(htmlNode);

var xhtmlNode = document.createElementNS(XHTML_NS, "div");
content.appendChild(xhtmlNode);
testClassList(xhtmlNode);

var xulNode = document.createElementNS(XUL_NS, "box");
content.appendChild(xulNode);
testClassList(xulNode);

var mathMLNode = document.createElementNS(MATHML_NS, "math");
content.appendChild(mathMLNode);
testClassList(mathMLNode);

var xmlNode = document.createElementNS(null, "foo");
content.appendChild(xmlNode);
testClassList(xmlNode);

var fooNode = document.createElementNS("http://example.org/foo", "foo");
content.appendChild(fooNode);
testClassList(fooNode);

</script>
</pre>
</body>
</html>
